On Fri, Dec 14, 2018 at 10:07:17AM -0800, Roman Gushchin wrote: > __vunmap() calls find_vm_area() twice without an obvious reason: > first directly to get the area pointer, second indirectly by calling > remove_vm_area(), which is again searching for the area. > > To remove this redundancy, let's split remove_vm_area() into > __remove_vm_area(struct vmap_area *), which performs the actual area > removal, and remove_vm_area(const void *addr) wrapper, which can > be used everywhere, where it has been used before. > > On my test setup, I've got up to 12% speed up on vfree()'ing 1000000 > of 4-pages vmalloc blocks. > > Signed-off-by: Roman Gushchin <guro@xxxxxx> > Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx> Reviewed-by: Matthew Wilcox <willy@xxxxxxxxxxxxx>
